4) Network theory: –

Network analysis techniques:-https://www.youtube.com/watch?v=QYE6uZlPqZY
Network theorems:-https://www.youtube.com/watch?v=bnjiLg4xfh8&list=PLmJ90L1wsHRnHf01eyqH0CvIvq0J-Om_f
steady state sinusoidal response:-https://www.youtube.com/watch?v=Gwy2HjLn8Ko
Two port networks:-https://www.youtube.com/watch?v=GasWAlIvvD8&list=PL16EE39765482C57F
Network graphs and their applications in network analysis:-https://www.youtube.com/watch?v=F8qiM3o0Jc0
Z, Y, h and transmission parameters:-https://www.youtube.com/watch?v=WVxWesqPto8
Analysis of common two ports:-https://www.youtube.com/watch?v=OebCfH9T3r8
Combination of two ports:-https://www.youtube.com/watch?v=iIjMzXmILXk
Network functions : obtaining a network function from a given part:-https://www.youtube.com/watch?v=b8rYb_kt5Ng
parts of network functions:-https://www.youtube.com/watch?v=kI5So5YSRvI
Elements of network synthesis:-https://www.youtube.com/watch?v=SpTbySxrQWI
Transmission criteria : Elmore’s and other definitions effect of cascading:-https://www.youtube.com/watch?v=t57TSl2IDu0
Transmission criteria :delay and rise time:-https://www.youtube.com/watch?v=XP8l832K0Aw

standard book:-

• Hayt engineering circuit analysis 8th edition:-http://www.slideshare.net/louizrae/hayt-engineering-circuit-analysis-8th-txtbk
• Edminister-ElectricCircuits sham series:-https://archive.org/details/TheoryAndProblemsOfElectricCircuits